Tuning the Electronic Structure and Solubility of Conjugated Polymers with Perfluoroalkyl Substituents: Poly(3-perfluorooctylthiophene), the First Supercritical CO2-soluble Conjugated Polymer

Orthogonally conjugated moieties appended to a conjugated polymer backbone are used to control solubility and packing. Here, electronic-structure calculations show how such configurations impact the polymer geometry and the electronic/optical properties.

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Electronic structure studies of conducting polymers by electron energy-loss spectroscopy

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100163265 ◽

1996 ◽

Vol 54 ◽

pp. 160-161

Author(s):

J. Fink

Keyword(s):

Electronic Structure ◽

Conducting Polymers ◽

Conjugated Polymers ◽

Electron Acceptors ◽

Electron Donors ◽

Light Emitting ◽

One Dimensional ◽

New Class ◽

Electrical Conductivities ◽

Electron Energy Loss

Conducting polymers comprises a new class of materials achieving electrical conductivities which rival those of the best metals. The parent compounds (conjugated polymers) are quasi-one-dimensional semiconductors. These polymers can be doped by electron acceptors or electron donors. The prototype of these materials is polyacetylene (PA). There are various other conjugated polymers such as polyparaphenylene, polyphenylenevinylene, polypoyrrole or polythiophene. The doped systems, i.e. the conducting polymers, have intersting potential technological applications such as replacement of conventional metals in electronic shielding and antistatic equipment, rechargable batteries, and flexible light emitting diodes.Although these systems have been investigated almost 20 years, the electronic structure of the doped metallic systems is not clear and even the reason for the gap in undoped semiconducting systems is under discussion.

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Strategies and concepts in n-doped conjugated polymer thermoelectrics

Journal of Materials Chemistry A ◽

10.1039/d0ta12166e ◽

2021 ◽

Vol 9 (9) ◽

pp. 5149-5163

Author(s):

Teck Lip Dexter Tam ◽

Jianwei Xu

Keyword(s):

Conjugated Polymers ◽

Conjugated Polymer ◽

Chemical Structure ◽

Structure Engineering

In this review, we discuss strategies & concepts in chemical structure engineering for n-type conjugated polymers & n-dopants that have brought about huge improvements in the performance of n-doped conjugated polymer thermoelectrics in recent years.

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Synthesis and characterization of an electron-deficient conjugated polymer based on pyridine-flanked diketopyrrolopyrrole

RSC Advances ◽

10.1039/d1ra00779c ◽

2021 ◽

Vol 11 (21) ◽

pp. 12995-13003

Author(s):

Jialin Yang ◽

Li Yang ◽

Qianqian Chen ◽

Keke Guo ◽

Ji-Min Han

Keyword(s):

Conjugated Polymers ◽

Electrochemical Properties ◽

Conjugated Polymer ◽

Synthesis And Characterization

We report a pyridine-flanked diketopyrrolopyrrole monomer and all-acceptor conjugated polymers synthesized therefrom. Photophysical, thermal and electrochemical properties of the polymers have been determined.

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Carbon Nanotube-Induced Planarization of Conjugated Polymers in Solution

MRS Proceedings ◽

10.1557/proc-858-hh12.4 ◽

2004 ◽

Vol 858 ◽

Cited By ~ 1

Author(s):

Jian Chen ◽

Rajagopal Ramasubramaniam ◽

Haiying Liu

Keyword(s):

Carbon Nanotubes ◽

Carbon Nanotube ◽

Conjugated Polymers ◽

Spectroscopic Study ◽

Surface Quality ◽

Hybrid Materials ◽

Conjugated Polymer ◽

Visible Absorption ◽

The Impact ◽

Conformational Interaction

ABSTRACTThe understanding of the conformational interaction between conjugated polymers and carbon nanotubes in solution is essential to develop the applications of carbon nanotubes, particularly conjugated polymer-carbon nanotube hybrid materials. The visible absorption spectroscopic study shows that curved carbon nanotube surfaces can induce the planarization of individual conjugated polymers such as poly(p-phenyleneethynylene)s and poly(3-alkylthiophene)s in solution. The impact of nanotube surface quality on the interaction between carbon nanotubes and conjugated polymers is investigated.

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Light-Emitting Diodes Based on Conjugated Polymers: Control of Colour and Efficiency

MRS Proceedings ◽

10.1557/proc-247-647 ◽

1992 ◽

Vol 247 ◽

Cited By ~ 62

Author(s):

Paul L. Burn ◽

A. B. Holmes ◽

A. Kraft ◽

A. R. Brown ◽

D. D. C. Bradley ◽

...

Keyword(s):

Electronic Structure ◽

Conjugated Polymers ◽

Light Emitting Diodes ◽

Fold Increase ◽

Transport Layer ◽

Electron Transport Layer ◽

Metal Contacts ◽

Light Emitting ◽

Lithographic Patterning ◽

Energy Gaps

ABSTRACTStudies of the effect of different electrode combinations on the device characteristics of simple three layer light-emitting diodes (LEDs) prepared with poly(ρ-phenylenevinylene) (PPV) as the emissive layer sandwiched between two metal contacts have shown that it is generally more difficult to inject electrons than holes. In order to improve the efficiency of such devices it is, therefore, necessary to develop methods to enhance the injection of electrons and we illustrate here one example where we have successfully achieved this by the introduction of a further, electron transport, layer. The result is an eight fold increase in efficiency over our best three layer PPV devices. The efficiency is also dependent on the details of the polymer electronic structure and using a family of copolymers we have been able to produce enhancements in efficiency to values of up to 30 times that of the corresponding PPV devices. Variations in the polymer electronic structure also affect the colour of emission and the same family of copolymers allow control of emission colour from blue/green to orange/red. Supramolecular control of the copolymer electronic structure can be achieved by lithographic patterning and we show that it is possible to produce regions within a single polymer film that possess different π-π* energy gaps.

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